An hour later, Lu Chuan had arrived at the cold storage.
"Xiao Lu, this is it, look at it."
There was a hint of excitement in Zhang Xiao's solemn expression.
Just an hour ago, when Zhang Xiao was about to leave the cold storage, he accidentally glanced at the support legs of the shelves against the wall.
A brown scar was found on the side of the supporting leg.
The front of the scar is normal, but there are some marks on the back, on the side next to the wall.
Normally, if you look at it from the front, you won't be able to find this brown stain.
The reason why Zhang Xiao was able to discover it was because his position was parallel to the shelf, which was exactly the angle of the light, allowing him to find the scar at that position.
Then, Zhang Xiao checked it carefully, but in the end he was still not sure whether it was the traces left by what he guessed.
So Zhang Xiao immediately called the current survey team.
Lu Chuan squatted next to the shelf, opened the spotting box, and took out the LSK fluorescent lamp.
Once the lights were turned on, the originally colorless floor, walls, and shelves were covered with traces of earthy brown.
"Blood stains!"
Zhang Xiao was only unsure just now, but now he saw large earth-brown traces under the fluorescent light, and was finally sure that what he discovered was blood stains!
However, someone had deliberately cleaned up these blood stains, so nothing could be seen on the surface.
However, blood stains can be wiped out, but the hemoglobin in the blood is difficult to remove.
It is difficult to clean the protein substances in the blood with water. Even if it seems to be gone, there are actually residues.
This protein has a strong reflection effect on fluorescence, and will emit earthy brown light when illuminated by fluorescence.
Lu Chuanxia's research on the blood stains was obviously much more in-depth than Zhang Xiao's.
Fluorescence can detect the presence of blood stains, but it cannot prove whether the blood stains are human blood.
Traces of any animal's blood can emit fluorescent reflections.
"I will take some residual substances and go back for analysis. The results will be available in about half an hour."
Lu Chuan just heard Zhang Xiao mention that this cold storage room was rented by a fruit merchant.
Usually used to store some fruits that are not easy to preserve.
If that's the case, then there shouldn't be blood stains.
So, where did these bloodstains come from?
More importantly, the reason why Zhang Xiao checked these cold storages was because Lu Chuan discovered that the bodies might have been refrigerated.
"Okay, let's split up and report to team leader Ren right now. This Zhao Wenjun...see where he goes!"
Zhao Wenjun is the owner of the rental cold storage, and only he has the key.
Moreover, this refrigerator has a separate entrance and exit behind the freezer that Zhang Xiao just inspected, making it relatively secretive.
Zhao Wenjun also transported fruits through his own truck, which was fully convenient for transporting corpses.
Criminal Investigation Detachment.
Qin Yong's office.
"found it?"
Ren Qiang nodded heavily: "Found it, a cold storage on the bank of Bailan River."
"Zhang Xiao found traces of suspected blood inside. Lu Chuan went to the scene and used fluorescent lights to find a large area of blood that had been cleaned up."
"The blood stain identification on Lu Chuan's side has just been completed, and it is confirmed that it is human blood."
The blood of any mammal is red and contains hemoglobin.
Because hemoglobin is the physical carrier for blood to transport oxygen, blood appears red.
But there are subtle differences in the composition of hemoglobin in different species. .net
Nowadays, we can detect this difference through experiments. After comparing it with the standard ingredient list, we can determine what animal left the blood stains.
"Are you sure the blood stains belong to the deceased?"
"This is still uncertain," Ren Qiang shook his head.
Lu Chuan has the ability to identify and analyze blood stains, but it is impossible to never have any activity.
Even the bloodstains that have been erased are confirmed to belong.
Moreover, due to severe decay, the blood in the body has long since disappeared, making it impossible to extract effective marking information.
It is even more impossible to make a judicial comparison.
"However, I suggest that Zhao Wenjun be investigated now and maybe even subpoenaed."
Qin Yong nodded.
A rotten corpse was found on the bank of the Bailan River. The corpse might have been refrigerated. A large amount of blood was found in the cold storage room rented by Zhao Wenjun.
Combining these findings, it is certainly possible that Zhao Wenjun is the murderer.
"Moreover, when the manager of the cold storage called Zhao Wenjun to say that the police wanted to inspect the cold storage, the other party did not respond for two or three breaths."
When they were on the phone, Zhang Xiao asked the other party to talk on the speaker phone.
"The other party said it was because we entered the elevator and the signal was not good."
"But Zhang Xiao clearly heard the honking of a car horn on the phone."
"Zhang Xiao didn't pay much attention to it at first, but after discovering the blood stains, Zhang Xiao thought that Zhao Wenjun must have been frightened at that time, so he hesitated and didn't speak immediately."
Many times, this is how crimes are solved. It seems that there is nothing unusual about the behavior, but combined with some clues, it can be determined that there is something wrong.
"Well, summon Zhao Wenjun immediately and conduct a thorough investigation of his social relationships!"
With the target person in mind, the rest of the work becomes much easier.
In less than a day, all the information about Zhao Wenjun was placed in front of Qin Yong.
Zhao Wenjun, male, 38 years old, a native of Haizhou City, has been in the fruit business.
"Zhao Wenjun started his business ten years ago. At that time, durian production was reduced due to natural disasters and the price was very expensive. Zhao Wenjun had a distant relative in Malay who helped him order a large number of foreign durians. After shipping them back to China, Zhao Wenjun made the first profit. gold."
"After that, Zhao Wenjun became a first-class fruit wholesaler in Haizhou City because he had a lot of capital."
"This is why Zhao Wenjun needs to rent a cold storage room to store valuable fruits."
"Because he is in the fruit wholesale business, Zhao Wenjun's interpersonal relationships are relatively complicated and he knows a lot of people. However, no abnormalities were found through combing and investigation."
Dozens of people under Ren Qiang were all dispatched to carefully map out Zhao Wenjun's social relationships.
However, no one was missing from relatives, friends, or the fruit wholesalers that Zhao Wenjun often worked with.
Qin Yong carefully looked through the report in his hand and frowned.
The investigation results about Zhao Wenjun were somewhat beyond Qin Yong's expectations. This person can be said to be very clean.
Although he has money, he doesn't have any bad habits. He doesn't even smoke and rarely drinks.
Not to mention gambling, this man didn't even play poker, and his family relationship was relatively harmonious, so there was no trace of Zhao Wenjun's affair.
"How about the interrogation room?"
Just two hours ago, Zhao Wenjun had been summoned from Tianzhou City back to Haizhou City.
Qin Yong personally called the Tianzhou City Criminal Investigation Detachment, which sent people to find Zhao Wenjun immediately.
Now, the person is already in the interrogation room.
